Fan.



J. KANDERA.

PAN.

APPLICATION FILED APR. 28. 1911.

Patented July 11, 1911.

STATES, PATENT oFFioE.

JOHN or NEW YQBK, N. Y.

FAN.

To all whom it may concern:

Be it known that I, JOHN KANDEBA a subject of the Kin of Hungary, andresident of the city of ew York, in the county of Queens and State ofNew York, have invented certain new and useful Improvements in Fans, ofwhich the following is a specification. r,

The present invention relates to improvements in fans, and moreparticularly to a fan having a plurality of blades. One of the objectsof the invention is to provide a simple'and durable fan of thischaracter which can be rapidly rotated to set up an air current, andwhich requires little eXertionfor its operation.

Another object of the invention is to provide a fan, the blades of whichcan be folded or collapsed, wherebyvthe device can be carried along inthe pocket of the user.

With these and other objects in "view,

which will appear as the nature of the invention is better understood,the same consists in the combination, arrangement and construction ofparts hereinafter full described, pointed out in the appended c. aimsand illustrated in the accompanying drawings, it being understood thatmany changes may be made in the size and proportion of the several partsand details of construction without departing from the spirit or sacrificing any of the advantages of the in- One .of the many. possibleembodiments of the invention is illustrated in the accompanyingdrawings, in which Figure 1 is a front elevation of a fan constructed inaccordance with the present invention, its cover being removed toshowthe interior construction of the same, and

\ Fig. 2 is a section taken on line 22 with the blades in their foldedpositions.-

In the drawings, the numeral 3 indicates a casing of any suitablematerial and shape, having a cover 4 attached thereto, prefer- ',ably,by means of screws 5, 5. In this cas- 111g is arranged a frame 6comprising bearings 7 and 8, which are connected by substantiallyvertical bars 9, 9, which latter may be either made integral with thebearings or attached thereto in any suitable manner. This frame is heldin position. in the casing by means of the screws 5, 5, which secure thecover 4 in place in the casing 3. A centrally arranged bearing 10 isfurthermore located in the casing, which is pr I Specification ofLettersil'a'tent. Patented Application insea -i128, 1911, Serial No.623,878.

ai -1y 11,1911.

vided with bores and 12,.whichbross each other, preferably, at' rightangles." In

the bearing 10 are journaled four shafts 13, 14,.15 and16. The shafts 15and 16 form ,continuations of each other, andso also the shafts 13 and14, which 'are arranged 'at right angles to the longitudinal axes of theshafts 15 and 16. I The shaft 13 forms the main shaft of the apparatus,and is provided upon its upper free end witha lug 17 which is recessedat diametrically opposite points 18, 18 of the shaft 13. In thesereces'ses are arranged the arms 19, 19 of the fan blades 20, 20, andfastened thereto by pivots 21. passing through the lugs 17 and the arms19 of the blades, \The outer end of the shaft 13 is screw threaded, asshown at 22. These threads mesh with the inner threads of a thumb nut23,'the diameter of which is somewhat larger than the distance betweenthe inner ends of the arms 19 of the blades, when said blades are intheir operative, substantially horizontal positions. 7 Motion isimparted to the shaft 13 from the driving shaft 16, to which a'crank 24:is attached, in the following manner: To thedriving shaft is securedwithin the casing a bevel gear 25 meshing with a similar gear 2-6,-mounted upon theshaft 14:. To this shaft is furthermore attached a bevelgear 27, meshing with a similar gear 28, which is made integral with alarger bevel gear 29.

" meshing with a comparatively smaller bevel gear 30, which latter isfixedly attached to the shaft 13. The ratio between the bevel gearsmentioned is such that one revolution of the bevel gear 25, that is tosay of the crank 24, will result in a great number of revolutions of theshaft 13 and the blades attached thereto. To the casing is furthermoreattached a flexible band 31, preferably, by the screws 5 which hold thecover upon the casing, to serve as a handle of the device.

The operation of the device is as follows: When the fan is to be placedinto the pocket or a'small satchel, the thumb nut 23 is loosened,whereby the inner ends of the arms 19 of the blades will bereleased, sothat the latter may be folded substantially parallel to the axis of theshaft 13 into the positions shown in Fig. 2 of the drawings. To preparethe fan for use, the blades are brought into the positions shown in Fig.1 of the drawings, the thumb nut tightened, and the axis of the shaftbrought in a substantially horizontal position. When now the crank 24 isrotated, the blades will rotate at a high speed and set up a coolingcurrent of air.

It is to be noted that the device is particularly useful as a hand-fanduring warm weather, or in sick rooms, etc.

The device is easily operated by simply turning the crank by a verysmall movement of the hand of'the user, or in other words without auseless exertion which would heat the body and tire the person using thefan.

What I claim is:

1. In a fan, the combination with a casing, of a shaft rotatablyarranged therein and projecting through an opening in said casingoutside of the same, a lug attached to the outer end of'said shaft, fanblades pivoted to said lug, said blades being adapted to be foldedaround their pivots into substantially parallel relation with said shaftand in contact with said casing, means upon said shaft adapted to beforced into engagement with the inner ends of said blades to hold thesame in their extended positions, and means arranged outside of saidcasing for imparting rotation to said shaft.

' 2. In a fan, the combination with a casing, of a shaft rotatablyarranged therein and projecting through an opening in said casingoutside of the same, a lug attached to the outer screw threadedend ofsaid shaft, fan blades pivoted to said lug, said blades being adapted tobe folded around their pivots into substantially parallel recomaa lationwith said shaft and .in contact with said casing, a thumb nut engagingthe screw threads on said shaft and adapted to be forced into engagementwith the inner ends of said blades to hold the same in their eza tendedpositions,'and means arranged out-- side of said casing for impartingrotation to said shaft.

3. In a fan, the combination with a casing, of a plurality of shaftsrotatably arranged therein, one of said shafts projecting through anopening in said casing outside of the same, a lug attached to the outer'screw threaded end of this latter shaft, fan

blades pivoted to said lug, said blades being ing connecting all of saids afts, and a crank arran ed outside of said casing rigidly attache toone of said shaftsfor imparting rotation to said fan blades.

Signed at New York, in the -county of New York and State ofNew York,this 25th day'of April, A. D. 1911.

JOHN KANDERA.

witnessesz' I SIGMUND Hanzoo,

' S. BIRNBAUM'.

adapted to be folded around their, pivots

